Mudslides covered about 30 houses on a hill in central Taiwan’s Nantou County, and three bodies were recovered from the rubble late Saturday, the National Disaster Relief Center said.
Also on Saturday, another mudslide in nearby Taichung County killed two people, and an 80-year-old woman and her 4-year-old grandson drowned in their flooded home there, police said.
Rivers swept two others away to their deaths Saturday, the police said.
The storm, which has brought southern Taiwan’s worst flooding in 25 years, killed six other people last week.
Taichung County residents said floodwaters submerged the first floor of their apartment building in less than an hour, forcing them to rush to higher floors, the China Times newspaper said.
"Mindulle" pushed toward South Korea on Saturday, but torrential rains at its fringes continued Sunday in many of Taiwan’s mountainous areas.
More than 10 bridges closed due to flood damage, newspapers said.
Television footage showed rescuers struggling with their overturned raft in a raging river in central Taichung County before reaching a family of seven trapped in their hillside house.
The government broadcast an alert over commercial radio stations, urging villagers to prepare for flash floods and evacuate if possible, noting that rainfall in Nantou County had reached 140-millimeters (5.6 inches) an hour on Sunday.
In parts of the island where the rains had eased, residents cleaned their muddy floors and houses, piling damaged furniture along the streets.
Taiwan’s Council of Agriculture estimated crop and infrastructure damage at 528 million New Taiwan dollars (US$15.65 million). Fruit farms suffered the worst, the council said, with losses of NT$378 million (US$11.2 million). The storm also left 23,000 poultry dead.
In the Philippines, "Mindulle" which was called "Igme" killed at least 31 people, while 11 others were missing and feared dead, officials said Saturday.